Datasheet

Solid-State Switching Devices for Resistive Loads
3RF29 Function Modules
SIRIUS heating current monitoring for 3RF2
4/100
Siemens IC 10 · 2011
* You can order this quantity or a multiple thereof.
Illustrations are approximate
4
■ Overview
Heating current monitoring for 3RF2 single-phase solid-
state switching devices
Many faults can be quickly detected by monitoring a load circuit
connected to the solid-state switching device, as made possible
with this module. Examples include the failure of up to 6 load el-
ements, alloyed power semiconductors, a lack of voltage or a
break in a load circuit. A fault is indicated by LEDs and reported
to the controller by way of a relay output (NC contact).
The principle of operation is based on permanent monitoring of
the current intensity. This figure is continuously compared with
the reference value stored once during start-up. In order to de-
tect the failure of one of several loads, the current difference
must be 1/6 of the reference value. In the event of a fault, an out-
put is actuated and the LEDs indicate the fault.
The heating current monitoring has a teach input and therefore
differs from the load monitoring. This remote teaching function
enables simple adjustment to changing loads without manual
intervention.
Special versions:
deviations from the standard version
3RF29 ..-0JA1.-1KK0
If the current is below 50% of the lower teach current during the
teach routine, the device will go into "Standby" mode; the LOAD
LED will flicker. The device thus detects a non-connected load,
e.g. channels not required for tool heaters, and does not signal
a fault. This mode can be reset by re-teaching.
■ Application
The device is used for monitoring one or more loads (partial
loads). The function module can only be used in conjunction with
a 3RF21 solid-state relay or a 3RF23 solid-state contactor. The
devices with spring-type connections in the load circuit are not
suitable.
■ Selection and ordering data
1)
Supplied without control connector. The control connector can be pur-
chased from Phoenix Contact by quoting Order No. 1982 790
(2.5 HC/6-ST-5.08).
Rated operational current
I
e
Rated operational voltage
U
e
DT Screw terminals PU
(UNIT,
SET, M)
PS* PG
AV
Order No. Price
per PU
Heating current monitoring
1)
3RF29
Rated control supply voltage 24 V AC/DC
16 110 … 230 A
3RF29 16-0JA13 1 1 unit 101
16 110 … 230 A
3RF29 16-0JA13-1KK0 1 1 unit 101
16 400 … 600 A
3RF29 16-0JA16-1KK0 1 1 unit 101
32 110 … 230 A
3RF29 32-0JA13-1KK0 1 1 unit 101
32 400 … 600 A
3RF29 32-0JA16 1 1 unit 101
32 400 … 600 A
3RF29 32-0JA16-1KK0 1 1 unit 101
Version DT Order No. Price
per PU
PU
(UNIT,
SET, M)
PS* PG
Optional accessories
3RF29 00-0RA88
Sealable covers
for function modules (not for converters)
B
3RF29 00-0RA88 1 10 units 101
© Siemens AG 2010